"...today announced its wholly-owned subsidiary, DenseLight Semiconductors, an innovator of high performance lasing solutions for optical sensing applications, has begun sampling Avalanche Photodiodes (APD) and PIN Photodiodes (PIN) for the 10G Datacom and Telecom markets. In addition, DenseLight has also begun sampling its Monitor Photodiode (MPD) arrays for applications in 100G Datacom applications. 

Now, that's the kind of language I can get behind!  We don't know with whom, or with how many, but I assume you do not sample with yourself, so....   To me, that's a clear step.  Next step, more sampling and then some feedback, hopefully positive from the current and future samplers - and if we're lucky, that feedback will take the form of a "PO."